Class ListReader

  • public class ListReader
    extends Object
    • Constructor Detail

      • ListReader

        public ListReader()
    • Method Detail

      • readListFromHDFS

        public static ListObject readListFromHDFS​(String fname,
                                                  String fmtStr,
                                                  FileFormatProperties props)
                                           throws DMLRuntimeException
        Reads a list object and all contained objects from a folder with related meta data. The individual objects (including nested lists) are read with existing matrix/frame readers and meta data such that the entire list and separate objects can be restored. By using the existing readers, all formats are naturally supported and we can ensure consistency of the on-disk representation.
        fname - directory name
        fmtStr - format string
        props - file format properties
        list object
        DMLRuntimeException - if inconsistent meta data or read fails